Invasion Silicone Urethral Sound Trainer Set

Explore a graduated range of widths at your own pace with this three-piece urethral sound trainer set. Each flexible silicone sound has a different diameter at either end, giving you two widths to consider on every rod. The rods bend with the body as a sound slides along the shaft.

All three rods measure 8 inches long, while their end diameters progress from the narrowest pair to the widest. This gives you several measured widths to compare when deciding where to begin and which end to use during a session. The double-sided design offers a choice of widths without changing rods.

• Graduated diameters: The smallest sound measures 0.19 and 0.23 inches across; the medium measures 0.27 and 0.32 inches; the large measures 0.34 and 0.38 inches.
• Two ends per sound: Each rod has a different girth at either end, so you can choose between two widths on that sound.
• Flexible design: The rods bend with the body during use, following its movement as the sound slides along the shaft.
• Silicone construction: The sounds are made from non-porous, phthalate-free silicone and can be sterilized between uses.

Compare the end measurements to choose a starting width, keeping in mind that each rod offers two options. After use, sterilize the silicone sounds between sessions. The clear size progression makes it easy to see how the three rods differ before choosing one.